package com.kx.center.util;

import java.util.Enumeration;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang3.StringUtils;

public class IPUtil {

		public static String getIp(HttpServletRequest request) {
	           String ip = request.getHeader("X-Forwarded-For");
	           if(StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)){
	               //多次反向代理后会有多个ip值，第一个ip才是真实ip
	               int index = ip.indexOf(",");
	               if(index != -1){
	                   return ip.substring(0,index);
	               }else{
	                   return ip;
	               }
	           }
	           ip = request.getHeader("X-Real-IP");
	           if(StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)){
	               return ip;
	           }
	           return request.getRemoteAddr();
	       }
}
